Newbie- Potential ABCD Pattern on GBPCAD?

Just been looking at the GBPCAD and I think I have found a ABCD pattern.
The C leg is on the 0.618 retracement (1.8300) with a possible 1.272 retracement to D leg at 1.8500

could I trade the short down to D leg then go long on the D leg?

What do you guys think?
AB=CDGBPCAD

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